| 摘要 |
<p>Pressure reducer (14) for the hydraulic control circuit (13) of a specific distributor (21) is adjustable, so that it is possible to pre-regulate the operating speed of the particular receiver. Hydraulic control circuit includes a pressure limiter (16) set to a predetermined value corresponding to maximum admissible pressure for control of specific distributor, two start/stop electro-valve (15a1,15a2) corresponding to two operating modes. The hydraulic circuit for actuating multiple hydraulic receivers includes: (a) a pressurized hydraulic fluid source (S); a multiple hydraulic distributor (1) having a number of distributors (22 - 24) affected by the action of respective receivers (102 - 104) and which posses a function for detection of the highest pressure load, an anti-saturation function and a flow division function independent of the load; at least a specific hydraulic distributor (21) affected by the action of a particular receiver (12), which during normal operation, can require at least the largest part of the maximum flow from the hydraulic source. The distributor (21) is also of the type having a highest pressure detection function, an anti-saturation function, and a flow division function independent of the load and is included in the multiple hydraulic distribution circuit (1) in series with the other distributors (22 - 24), and; between the source (S) and at least a control input (a1) of a specific distributor (21) actuating the receiver (12) is a hydraulic control circuit (13), This circuit includes a pressure reducer (14) for lowering the highest fluid output pressure from the source to a control value so that at least another distributor can be used to actuate another receiver so that the particular receiver is operating.</p> |
